| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| FunctionContext |
|
| 1.0;1 |
| 1 | /* | |
| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/FunctionContext.java,v 1.10 2006/02/05 21:47:41 elharo Exp $ | |
| 3 | * $Revision: 1.10 $ | |
| 4 | * $Date: 2006/02/05 21:47:41 $ | |
| 5 | * | |
| 6 | * ==================================================================== | |
| 7 | * | |
| 8 | * Copyright 2000-2002 bob mcwhirter & James Strachan. | |
| 9 | * All rights reserved. | |
| 10 | * | |
| 11 | * Redistribution and use in source and binary forms, with or without | |
| 12 | * modification, are permitted provided that the following conditions are | |
| 13 | * met: | |
| 14 | * | |
| 15 | * * Redistributions of source code must retain the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer. | |
| 17 | * | |
| 18 | * * Redistributions in binary form must reproduce the above copyright | |
| 19 | * notice, this list of conditions and the following disclaimer in the | |
| 20 | * documentation and/or other materials provided with the distribution. | |
| 21 | * | |
| 22 | * * Neither the name of the Jaxen Project nor the names of its | |
| 23 | * contributors may be used to endorse or promote products derived | |
| 24 | * from this software without specific prior written permission. | |
| 25 | * | |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| 27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
| 30 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 37 | * | |
| 38 | * ==================================================================== | |
| 39 | * This software consists of voluntary contributions made by many | |
| 40 | * individuals on behalf of the Jaxen Project and was originally | |
| 41 | * created by bob mcwhirter <bob@werken.com> and | |
| 42 | * James Strachan <jstrachan@apache.org>. For more information on the | |
| 43 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
| 44 | * | |
| 45 | * $Id: FunctionContext.java,v 1.10 2006/02/05 21:47:41 elharo Exp $ | |
| 46 | */ | |
| 47 | ||
| 48 | ||
| 49 | package org.jaxen; | |
| 50 | ||
| 51 | /** Implemented by classes that know how to resolve XPath function names and | |
| 52 | * namespaces to implementations of these functions. | |
| 53 | * | |
| 54 | * <p> | |
| 55 | * By using a custom <code>FunctionContext</code>, new or different | |
| 56 | * functions may be installed and available to XPath expression writers. | |
| 57 | * </p> | |
| 58 | * | |
| 59 | * @see XPathFunctionContext | |
| 60 | * | |
| 61 | * @author <a href="mailto:bob@werken.com">bob mcwhirter</a> | |
| 62 | */ | |
| 63 | public interface FunctionContext | |
| 64 | { | |
| 65 | /** An implementation should return a <code>Function</code> implementation object | |
| 66 | * based on the namespace URI and local name of the function-call | |
| 67 | * expression. | |
| 68 | * | |
| 69 | * <p> | |
| 70 | * It must not use the prefix parameter to select an implementation, | |
| 71 | * because a prefix could be bound to any namespace; the prefix parameter | |
| 72 | * could be used in debugging output or other generated information. | |
| 73 | * The prefix may otherwise be completely ignored. | |
| 74 | * </p> | |
| 75 | * | |
| 76 | * @param namespaceURI the namespace URI to which the prefix parameter | |
| 77 | * is bound in the XPath expression. If the function | |
| 78 | * call expression had no prefix, the namespace URI | |
| 79 | * is <code>null</code>. | |
| 80 | * @param prefix the prefix that was used in the function call | |
| 81 | * expression | |
| 82 | * @param localName the local name of the function-call expression. | |
| 83 | * If there is no prefix, then this is the whole | |
| 84 | * name of the function. | |
| 85 | * | |
| 86 | * @return a Function implementation object. | |
| 87 | * @throws UnresolvableException when the function cannot be resolved | |
| 88 | */ | |
| 89 | Function getFunction( String namespaceURI, | |
| 90 | String prefix, | |
| 91 | String localName ) throws UnresolvableException; | |
| 92 | } |